1. There are 20 million bloggers in the USA
2. 1.7 million are profiting from this work
3. 452,000 use blogging for their primary source of income
Per the article, which uses some information from Technorati, an online company that rates blogs, if you have 100,000 unique visitors a month you can earn $75,000 / year.
I find this to be very interesting. From Dan's experience (mine is more limited) and discussion with the guys at Chicago Boyz, which is a much bigger blog than ours, it seems like these revenue numbers are very high. From what I have heard, the typical blog gets peanuts from click-through revenues on ads.
There is a different world of people who care about their clicks, who sweat their search engine position, and intentionally TRY to gather viewers by posting about celebu-tards and the rest. That isn't us.
However, if we get 10,000 visitors a month, and say 5000 are unique (that's about right for where we are now), would we earn 1/20 of $75,000? I highly doubt it - the curve probably isn't linear, you probably get crumbs until you start getting a lot of viewers, but I don't really know.
If I really thought that this blog could earn 1/20 of $75,000, or say a bit around $4000 / year, then maybe we'd consider it and then donate the $ to some worthy charity, probably around veterans or the troops or something like that.
This is just a thought experiment, I really don't think we'd get more than scraps, but the numbers did catch my eye.